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Finding the Fourth Proportional to 809,361.60, 1,214,479.80 and 360,151.80

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Solution

The fourth proportional to 809,361.60, 1,214,479.80 and 360,151.80 is: 540,422.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,361.60 : 1,214,479.80 = 360,151.80 : x
  2. Step 2: Convert to fraction form
    809,361.60/1,214,479.80 = 360,151.80/x
  3. Step 3: Cross multiply
    809,361.60x = 1,214,479.80 × 360,151.80
  4. Step 4: Simplify right side
    809,361.60x = 437,397,086,033.64
  5. Step 5: Solve for x
    x = 437,397,086,033.64/809,361.60
  6. Step 6: Final answer
    x = 540,422.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.